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2018中考英语时态知识点:一般过去时三种变化技巧

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发表于 2018-4-16 22:03:37 | 显示全部楼层 |阅读模式

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                 一变:肯定句变为否定句
           
                【技巧1】当句中含有情态动词或助动词could,would,should等时,可直接在其后面加not构成否定句。例如:
           
                I could get you a concert ticket.→Icould not/couldn‘t get you a concert ticket.
           
                【技巧2】当句中含有系动词was,were时,可直接在其后加not构成否定句。例如:
           
                I was on the Internet when you called me.→I wasnot/wasn’t on the Internet when you called me.
           
              
           
                【技巧3】当句中谓语是除情态动词、助动词、系动词was,were以外的动词时,在该动词之前加didnot/didn‘t,动词还原,构成否定句。例如:
           
                The famous singer sang some Chinese songs.→The famous singer did not/didn’t sing any Chinese songs.
             
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    发表于 2018-4-16 22:58:19 | 显示全部楼层

           


  •                  
               二变:陈述句变为一般疑问句
           
                【技巧1】移动词语的位置。将was,were,could,would,should等移到句首。例如:
           
                He could pack his things himself.→Could he pack his things himself?
           
                【技巧2】添加助动词did。谓语是除情态动词、助动词、系动词was,were以外的动词时,在主语之前加did,动词还原。例如:
           
                Mr Li looked very old.→Did Mr Li look very old?
           
                三变:陈述句变为特殊疑问句
           
                【技巧1】确定疑问词:人who/whom,物what,地点where,时间when/whattime,原因why,频率how often,长度how long,距离how far等等。例如:
           
                They gave the concert last night.→When did they give the concert?
           
                【技巧2】辨认结构形式:疑问词+情态动词/助动词/was/were/did+主语+...?例如:
           
                The accident happened near the station.→Where did the accident happen
             
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